173 lines
4.2 KiB
C++
173 lines
4.2 KiB
C++
/**
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* Copyright (c) 2011-2018 Bill Greiman
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* This file is part of the SdFat library for SD memory cards.
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*
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* MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "fstream.h"
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//==============================================================================
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/// @cond SHOW_PROTECTED
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int16_t FatStreamBase::getch() {
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uint8_t c;
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int8_t s = read(&c, 1);
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if (s != 1) {
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if (s < 0) {
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setstate(badbit);
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} else {
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setstate(eofbit);
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}
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return -1;
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}
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if (c != '\r' || (getmode() & ios::binary)) {
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return c;
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}
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s = read(&c, 1);
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if (s == 1 && c == '\n') {
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return c;
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}
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if (s == 1) {
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seekCur(-1);
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}
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return '\r';
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}
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//------------------------------------------------------------------------------
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void FatStreamBase::open(const char* path, ios::openmode mode) {
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oflag_t oflag;
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switch (mode & (app | in | out | trunc)) {
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case app | in:
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case app | in | out:
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oflag = O_RDWR | O_APPEND | O_CREAT;
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break;
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case app:
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case app | out:
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oflag = O_WRONLY | O_APPEND | O_CREAT;
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break;
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case in:
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oflag = O_RDONLY;
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break;
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case in | out:
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oflag = O_RDWR;
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break;
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case in | out | trunc:
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oflag = O_RDWR | O_TRUNC | O_CREAT;
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break;
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case out:
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case out | trunc:
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oflag = O_WRONLY | O_TRUNC | O_CREAT;
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break;
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default:
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goto fail;
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}
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if (mode & ios::ate) {
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oflag |= O_AT_END;
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}
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if (!FatFile::open(path, oflag)) {
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goto fail;
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}
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setmode(mode);
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clear();
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return;
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fail:
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FatFile::close();
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setstate(failbit);
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return;
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}
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//------------------------------------------------------------------------------
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void FatStreamBase::putch(char c) {
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if (c == '\n' && !(getmode() & ios::binary)) {
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write('\r');
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}
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write(c);
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if (getWriteError()) {
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setstate(badbit);
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}
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}
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//------------------------------------------------------------------------------
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void FatStreamBase::putstr(const char* str) {
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size_t n = 0;
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while (1) {
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char c = str[n];
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if (c == '\0' || (c == '\n' && !(getmode() & ios::binary))) {
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if (n > 0) {
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write(str, n);
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}
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if (c == '\0') {
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break;
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}
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write('\r');
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str += n;
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n = 0;
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}
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n++;
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}
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if (getWriteError()) {
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setstate(badbit);
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}
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}
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//------------------------------------------------------------------------------
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/** Internal do not use
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* \param[in] off
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* \param[in] way
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*/
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bool FatStreamBase::seekoff(off_type off, seekdir way) {
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pos_type pos;
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switch (way) {
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case beg:
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pos = off;
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break;
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case cur:
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pos = curPosition() + off;
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break;
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case end:
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pos = fileSize() + off;
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break;
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default:
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return false;
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}
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return seekpos(pos);
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}
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//------------------------------------------------------------------------------
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/** Internal do not use
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* \param[in] pos
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*/
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bool FatStreamBase::seekpos(pos_type pos) {
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return seekSet(pos);
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}
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//------------------------------------------------------------------------------
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int FatStreamBase::write(const void* buf, size_t n) {
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return FatFile::write(buf, n);
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}
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//------------------------------------------------------------------------------
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void FatStreamBase::write(char c) {
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write(&c, 1);
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}
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/// @endcond
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